WATER SUPPLY AND DRAINAGE PIPE AND METHOD FOR MANUFACTURING THEREOF

摘要

A water supply and drainage pipe and a method for manufacturing the same are provided to sterilize water passing through the pipe and prevent an inner diameter of the pipe from being decreased by forming the pipe using pegmatite powder and polyethylene resin. A water supply and drainage pipe(100) comprises a hollow pipe. The hollow pipe contains 97 to 98 wt% of polyethylene resin solid(101) and 2 to 3 wt% of pegmatite power(103). The polyethylene resin solid is introduced into an extruder through a first hoper, which is connected to the extruder through a first input passage. Pegmatite powder is introduced into the polyethylene resin solid through a second hoper which is connected to the first hoper through a second input passage. Heat is applied to the extruder. The melt polyethylene resin solid is mixed with the pegmatite powder to be extruded in a pipe shape such that pegmatite powder is concentrated on an inner circumference of the pipe shape.